snr scalable meaning in English

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Embedded coding schemes are snr scalable , and , even farther , which are essential in transmission of image and video on internet
嵌入编码具有率伸缩特性，很适合在带宽随时延变化的互联网上使用。
They all are snr scalable , and , especially ebcot is resolution scalable . these properties are essential in transmission of image on internet . because the performance of an entropy coder can be significantly improved by having the coder dynamically adapt to the current " context " , context models also have widely been adopted in image compression
基于小波的图像压缩已成为图像压缩研究的主流，一些小波系数模型也随之产生，如ezw 、 spiht和用于jpeg2000的ebcot ，这三种模型都具有snr可扩展性质，其中ebcot还具有分辨率可扩展性质。